Year	Number of
1990	1070.74
1991	1127.05
1992	1174.94
1993	1230.74
1994	1280.53
1995	1290.32
1996	1257.76
1997	1254.53
1998	1337.15
1999	1394.07
2000	1504.51
2001	1575.19
2002	1616.63
2003	1752.17
2004	1732.92
2005	1761.46
2006	1900.63
2007	2028.26
2008	2120.63
2009	2181.23
2010	2130.54
2011	2217.05
2012	2376.68
2013	2399.52
2014	2491.79
2015	2591.11
2016	2690.14